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배성우Sungwoo Bae
National University of Singapore
J. Hazard. Mater., Sep 01 2023, 460 S0304-3894(23)01588-1 | https://doi.org/10.1016/j.jhazmat.2023.132305
Unveiling the impact of short-term polyethylene microplastics exposure on metabolomics and gut microbiota in earthworms (Eudrilus euganiae).
Wan Ting Chan 1, Carl Angelo Medriano 1, Sungwoo Bae
Department of Civil and Environmental Engineering, National University of Singapore, 117576, Singapore
1all authors contribute equally
Correspondence to: Sungwoo Bae
Abstract
Microplastics (MPs) pose a significant environmental concern, particularly for terrestrial fauna. In this study, earthworms were used as a model organism to investigate the ecotoxicological effects of short-term exposure to virgin MPs on changes in metabolome and gut microbiota. High-throughput untargeted metabolomics showed significant internal reactions in the earthworms' metabolic processes due to MPs exposure, even when no visible stress signs, such as changes in growth or mortality rates, were present. Earthworms exposed to different concentrations of polyethylene (PE) MP exhibited significant disruption in 39 and 199 molecular features related to energy and lipid metabolism, anti-inflammatory, cell signaling, and membrane integrity. The activities of enzymes and transport proteins in earthworms were dysregulated when exposed to PE. Changes in the gut microbiota's community structure and complexity were observed in response to PE MPs exposure. Despite the relative stability in alpha-diversity and relative abundance, shifts in beta-diversity and network analysis in the PE-exposed group were indicative of an adaptive response to MPs. Earthworms exhibited resilience or adaptation in response to MPs exposure, potentially maintaining their functionality. This study provides preliminary insights into the impact of MPs on soil invertebrates like earthworms and highlights the need for further exploration of long-term effects and underlying molecular mechanisms.
논문정보
- Research article
- 2023년 09월 (BRIC 등록일 2023-10-13)
- 국외 연구진
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